CN104378789A - Communication quality determining/acquiring device and method in wireless communication system - Google Patents

Communication quality determining/acquiring device and method in wireless communication system Download PDF

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Publication number
CN104378789A
CN104378789A CN201310359535.3A CN201310359535A CN104378789A CN 104378789 A CN104378789 A CN 104378789A CN 201310359535 A CN201310359535 A CN 201310359535A CN 104378789 A CN104378789 A CN 104378789A
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China
Prior art keywords
descending sub
sub frame
frame
grouping
subframe
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Granted
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CN201310359535.3A
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Chinese (zh)
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CN104378789B (en
Inventor
崔琪楣
付婷
陶铭亮
曾亮
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Sony Corp
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Sony Corp
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Priority to CN201310359535.3A priority Critical patent/CN104378789B/en
Priority to US14/901,623 priority patent/US10149308B2/en
Priority to PCT/CN2014/084547 priority patent/WO2015021945A1/en
Publication of CN104378789A publication Critical patent/CN104378789A/en
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Publication of CN104378789B publication Critical patent/CN104378789B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0073—Allocation arrangements that take into account other cell interferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Abstract

The invention discloses a communication quality determining/acquiring device and method in a wireless communication system. The determining device comprises a measuring module and a communication module. The measuring module is used for measuring the quality of a downlink channel according to the distribution condition of static downlink subframes and dynamic downlink subframes of a target cell, the static downlink subframes are in the downlink direction for the target cell and adjacent cells, and the dynamic downlink subframes are in the downlink direction for the target cell, and in the uplink direction for at least one adjacent cell. The communication module is used for reporting the downlink channel quality measuring result. Measuring and reporting are carried out according to the distribution condition of the static downlink subframes and the dynamic downlink subframes of the target cell and the actual configuration condition of the downlink subframes, and the quality of the channel can be accurately measured under the dynamic TDD UL/DL configuration condition and can be reported to a network side.

Description

Communication quality in wireless communication system determines/acquisition device and method
Technical field
The present invention relates to the communications field, and especially, relate to the communication quality acquisition device in communication quality determining device in a kind of wireless communication system and method and wireless communication system and method.
Background technology
Long Term Evolution (Long Term Evolution, referred to as LTE) system supports two kinds of duplex modes, that is, Frequency Division Duplexing (FDD) (FDD) and time division duplex (TDD).Compared to Frequency Division Duplexing (FDD), time division duplex does not need paired frequency spectrum resource, thus can provide system layout more flexibly.At present, the sub-frame configuration that TDD-LTE can provide 7 kinds of different asymmetric up-downgoings to distribute for each frame comprising 10 subframes, as shown in table 1 below, these sub-frame configuration can provide the descending sub frame of 40%-90%, have business adaptive character flexibly.Particularly; D in table 1 represents descending sub frame; U represents sub-frame of uplink; S represents special subframe; special subframe is by downstream Quadrature frequency division multiplexing (Orthogonal Frequency DivisionMultiplexing; referred to as OFDM) symbol, blank protection interval and upgoing O FDM symbol composition, and descending OFDM symbol account for comparatively great share, can be used for control information transmission and data message.So, usually special subframe can be approximately descending sub frame.
Table 1
In existing mobile communication system, in order to reduce presence of intercell interference and reduce management complexity, the community of the whole network all can be had identical TDD UL/DL by setting statically and configure.Under homogeneous network, when covering with macro base station, because the user of macro base station service is more, the statistical law of overlay area is comparatively steady and consistent, adopts this method for the identical uplink-downlink configuration of whole communities static state setting to be comparatively suitable.But, along with the development of radio communication, introduce low power access points in a large number, such as, micro-base station, femto base station, Home eNodeB, Remote Radio Unit etc., in this case, because the number of users of low power access points service is less, and mostly be focus to cover, therefore, the up-downgoing traffic carrying capacity dynamic change of low power access points overlay area is comparatively remarkable, and the up-downgoing traffic carrying capacity between different low power access points has significant difference, thus needs dynamically to carry out TDD UL/DL(Uplink/Downlink to each community) configuration.
When dynamic TDD UL/DL configures, suitable sub-frame configuration can be selected dynamically according to the traffic conditions of self in different communities, its adaptability and flexibility stronger.But then, because different uplink-downlink configuration is selected in adjacent community, will introduce the staggered interference of ascending-descending subframes between different districts, the interference namely between base station to base station and user are to inter-user interference.Such as, for a TDD subframe, this subframe is descending sub frame for community Cell1, and be sub-frame of uplink for community Cell2, for this subframe, the base station of community Cell1 will form inter base station interference (BS-BS interference as shown in Figure 1) to the base station of community Cell2, and the subscriber equipment of community Cell2 (UE) will form interference between UE (UE-UE interference as shown in Figure 1) to the UE of community Cell1.
In the network that static TDD configures, because the TDD UL/DL of each community configures identical, in each descending sub frame, the interference that receiving terminal and user are subject to all derives from the down transmitting power of other cell base stations, disturbed condition is more stable, therefore can measure with certain CQI report cycle and report a CQI value (in TD-LTE, there is 1ms in the cycle of reporting channel quality information, 5ms, 10ms, 20ms, 40ms, 80ms, several configuration of 160ms), be used for all descending sub frames in assessment one frame channel conditions (wherein, the main process that the CQI of prior art measures is as follows: in certain CQI report cycle, a subframe is selected to carry out CQI measurement, and call time and report a CQI value in regulation.The time point of reporting of user CQI is configured by high-level signaling by base station side).But in the network that dynamic TDD configures, the interference base of the static descending sub frame of Target cell originally derives from the down transmitting power of other cell base stations, dynamically the interference of descending sub frame then may derive from the down transmitting power of other cell base stations, also the uplink transmission power of other community users can be derived from, therefore, for in dynamic TDD configuration, the disturbed condition of each descending sub frame may be very different, this will cause traditional CQI measurement and reporting schemes can not reflect the change of each descending sub frame disturbed condition in dynamic TDD configuration, and then reduction systematic function.
For the problem cannot carried out effective channel quality measurement when dynamic TDD UL/DL configures and report in correlation technique, at present effective solution is not yet proposed.
Summary of the invention
For the problem cannot carried out effective channel quality measurement when dynamic TDD UL/DL configures and report in correlation technique, the present invention proposes communication quality acquisition device in communication quality determining device in a kind of wireless communication system and method and wireless communication system and method, the measurement of channel quality can be carried out when dynamic TDDUL/DL configures, make measurement result can reflect the disturbed condition of the subframe of dynamic-configuration.
To achieve these goals, according to an aspect of the present invention, the communication quality determining device in a kind of wireless communication system is provided.This device comprises:
Measurement module, for according to the static descending sub frame of Target cell and dynamic descending sub frame distribution situation, carry out down channel quality measurement, wherein, static descending sub frame is subframe Target cell and adjacent cell being to down direction, dynamic descending sub frame is the subframe of down direction for Target cell, and be the subframe of up direction at least one adjacent cell;
Communication module, for reporting down channel quality measurement result.
According to a further aspect in the invention, the communication quality defining method in a kind of wireless communication system is provided.The method comprises:
According to static descending sub frame and the dynamic descending sub frame distribution situation of Target cell, carry out down channel quality measurement, wherein, static descending sub frame is subframe Target cell and adjacent cell being to down direction, dynamic descending sub frame is the subframe of down direction for Target cell, and be the subframe of up direction at least one adjacent cell; Report down channel quality measurement result.
In accordance with a further aspect of the present invention, the communication quality acquisition device in a kind of wireless communication system is provided.This device comprises:
Judge module, for judging static descending sub frame in the descending sub frame of Target cell and dynamic descending sub frame distribution situation according to the uplink/downlink sub-frame configuration of Target cell and adjacent cell; Communication module, for static descending sub frame and dynamic descending sub frame distribution situation being sent to the subscriber equipment of Target cell, and reception subscriber equipment carries out measuring and the down channel quality measurement result reported according to static descending sub frame and dynamic descending sub frame distribution situation.
In accordance with a further aspect of the present invention, the communication quality acquisition methods in a kind of wireless communication system is provided.The method comprises:
Static descending sub frame in the descending sub frame of Target cell and dynamic descending sub frame distribution situation is judged according to the uplink/downlink sub-frame configuration of Target cell and adjacent cell; Static descending sub frame and dynamic descending sub frame distribution situation are sent to the subscriber equipment of Target cell, and reception subscriber equipment carries out measuring and the down channel quality measurement result reported according to static descending sub frame and dynamic descending sub frame distribution situation.
The present invention is by according to the static descending sub frame of Target cell and dynamic descending sub frame distribution situation, configuring condition for descending sub frame carries out measuring and reporting, can when dynamic TDD UL/DL configures Measurement accuracy channel quality report to network side, the problem of the practical communication quality of each descending sub frame when effectively avoiding descending channel quality reporting in prior art that network side can not be made to know that dynamic TDD UL/DL configures.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is subframe interlacing interference schematic diagram in the dynamic TDD system according to correlation technique;
Fig. 2 is the block diagram according to the communication quality determining device in the wireless communication system of the embodiment of the present invention;
Fig. 3 is the schematic diagram according to dividing into groups to subframe in the communication quality determination scheme in the wireless communication system of the embodiment of the present invention;
Fig. 4 is the flow chart according to the communication quality defining method in the wireless communication system of the embodiment of the present invention;
Fig. 5 is the block diagram according to the communication quality acquisition device in the wireless communication system of the embodiment of the present invention;
Fig. 6 is the flow chart according to the communication quality acquisition methods in the wireless communication system of the embodiment of the present invention;
Fig. 7 is the exemplary block diagram of the computer realizing technical solution of the present invention.
Embodiment
To be described one exemplary embodiment of the present invention by reference to the accompanying drawings hereinafter.For clarity and conciseness, all features of actual execution mode are not described in the description.But, should understand, must make a lot specific to the decision of execution mode in the process of any this practical embodiments of exploitation, to realize the objectives of developer, such as, meet those restrictive conditions relevant to system and business, and these restrictive conditions may change to some extent along with the difference of execution mode.In addition, although will also be appreciated that development is likely very complicated and time-consuming, concerning the those skilled in the art having benefited from present disclosure, this development is only routine task.
At this, also it should be noted is that, in order to avoid the present invention fuzzy because of unnecessary details, illustrate only in the accompanying drawings with according to the closely-related apparatus structure of the solution of the present invention and/or treatment step, and eliminate other details little with relation of the present invention.
Fig. 2 shows according to the communication quality determining device in the wireless communication system of the embodiment of the present invention.
As shown in Figure 2, comprise according to the communication quality determining device in the wireless communication system of the embodiment of the present invention:
Measurement module 21, for according to the static descending sub frame of Target cell and dynamic descending sub frame distribution situation, carry out down channel quality measurement, wherein, static descending sub frame is subframe Target cell and adjacent cell being to down direction, dynamic descending sub frame is the subframe of down direction for Target cell, and be the subframe of up direction at least one adjacent cell;
Communication module 22, for reporting down channel quality measurement result.
Wherein, adjacent cell mentioned herein can be the community adjacent with position, Target cell, and also can be the stronger community of the interference determined by measuring in advance, can also be by the preassigned community of system.
Alternatively, in one embodiment, measurement module 21 can pre-determine the quantity of the dynamic descending sub frame of Target cell, if dynamically the number of descending sub frame exceeds predetermined threshold, then illustrate that there is the more descending sub frame that may be disturbed Target cell, now, measurement module 21 will carry out down channel quality measurement respectively to static descending sub frame and dynamic descending sub frame; And if dynamically the number of descending sub frame does not reach predetermined threshold, then illustrate to the majority of Target cell or all descending sub frame can not be interfered, now, the measurement result representing all descending sub frame channel qualities can be obtained to arbitrary descending sub frame measurement, such as, measurement obtains a CQI.In addition, except determining whether to carry out respectively except down channel quality measurement static descending sub frame and dynamic descending sub frame according to the quantity of dynamic descending sub frame, can also, according to the ratio shared in descending sub frame of dynamic descending sub frame or the dynamically proportionate relationship of descending sub frame and static descending sub frame or the quantitative relation dynamically between descending sub frame and static descending sub frame, determine whether to carry out down channel quality measurement respectively to static descending sub frame and dynamic descending sub frame.Now, if the proportion that the dynamic descending sub frame of Target cell occupies in all subframes is less (such as, be less than a proportion threshold value) or dynamically descending sub frame and static descending sub frame small number (such as, be less than a proportion threshold value) or the quantity of dynamic descending sub frame is less than the quantity of static descending sub frame and the absolute value of both differences is greater than a predetermined value, then can obtain to arbitrary descending sub frame measurement the measurement result representing all descending sub frame channel qualities, such as, measurement obtains a CQI.So, in this embodiment, the distribution situation of static descending sub frame and dynamic descending sub frame is by the quantity of dynamic descending sub frame/static descending sub frame, dynamically descending sub frame and static descending sub frame proportion or dynamically descending sub frame and static descending sub frame quantitative relation are to each other determined, different according to the distribution situation determined, can measure arbitrary descending sub frame, also can measure respectively static descending sub frame and dynamic descending sub frame.
In one embodiment, communication quality determining device can be arranged at end side, and terminal can receive the static descending sub frame of the Target cell of base station notice and dynamic descending sub frame information by communication module 22.Wherein, static descending sub frame and dynamic descending sub frame information can be the ID of each subframe and the static state/dynamically labeled position of correspondence thereof, or, static descending sub frame and dynamic descending sub frame information also can be the ID of one group of descending sub frame and the static state/dynamically labeled position of this group correspondence, again or, static descending sub frame and dynamic descending sub frame information also can be only all dynamic descending sub frames ID(terminal can according to current ascending-descending subframes configuration and all dynamic descending sub frames learn static descending sub frame).
In one embodiment, grouping module (not shown) is may further include according to the device of the embodiment of the present invention, grouping module is used for dividing into groups to the descending sub frame of Target cell, obtains comprising the grouping of static descending sub frame and comprising the grouping of dynamic descending sub frame.Therefore, in this embodiment, all descending sub frames of Target cell in current uplink/downlink configuration can be divided into two groups by grouping module.Because the interference of dynamic descending sub frame and static descending sub frame exists larger difference, so, compared to carrying out unified measurement to all descending sub frames in conventional art and reporting the scheme of single CQI, the present embodiment is by measuring respectively the descending sub frame in each group, the measurement result obtained (such as, can be CQI) channel quality of subframe in the grouping of place can be reacted more exactly, contribute to network side and carry out subsequent treatment.
In one embodiment, grouping module can be arranged at network side, because the base station of Target cell can communicate with the base station of other neighbor cells, and then obtain the uplink/downlink sub-frame configuration of Target cell and adjacent cell, therefore, grouping module can be divided into groups to subframe according to the uplink/downlink sub-frame configuration of the Target cell got and adjacent cell.In another embodiment, grouping module can be arranged at end side, because communication module 22 can receive the static descending sub frame of Target cell and dynamic descending sub frame information, therefore, grouping module can be divided into groups according to the static descending sub frame received and dynamic descending sub frame information.
In another embodiment, descending sub frame can not only be divided into the grouping comprising dynamic descending sub frame and the grouping comprising static descending sub frame by grouping module, but the quantity of the interfering subframe according to each dynamic descending sub frame can be further used for, the grouping of dynamic descending sub frame is divided into groups further, wherein, interfering subframe is the uplink interference subframe of other communities.Such as, with reference to the static state shown in Fig. 3/dynamically descending sub frame configuration schematic diagram, community Pico3 adopts UL/DL to be configured to Config#5, using community Pico3 as Target cell, under the configuration shown in Fig. 3, the 0th subframe of this community, a 4-6 subframe and the 9th subframe are static descending sub frame, and second subframe is special subframe, be considered as static descending sub frame equally, therefore static descending sub frame can be divided to first group; And the 3rd subframe, the 6th subframe and the 8th subframe are dynamic descending sub frame, second group can be divided to; Wherein, for the 4th subframe, interfering subframe comprises the subframe of the subframe of community macrocell1, the subframe of community Pico1 and community Pico5, the quantity of interfering subframe is 3, and for the 6th subframe and the 8th subframe, its interfering subframe comprises the subframe of community Pico1 and the subframe of community Pico5, the quantity of interfering subframe is 2, therefore, can by the 3rd subframe Further Division to the 3rd group.Like this, just can make the grouping of dynamic descending sub frame more accurate, the dynamic descending sub frame contributing to existing difference amount of interference is measured respectively, improves the accuracy of measurement result.In one embodiment, in the process of dividing into groups to measure respectively to each, if at the frame of predetermined quantity, (this predetermined quantity can preset, can be set to one or more) in, there is the measurement result of multiple grouping closely even identical, then can to come to the same thing to these or close grouping merges, afterwards, then can carry out according to the grouping after merging measuring and on respond with to save and measure, report resource.
It should be noted that, the example carrying out subframe grouping according to the present embodiment has been shown in Fig. 3, when carrying out descending sub frame grouping later using community macrocell as Target cell, have employed different group technologies, therefore, the descending sub frame group result of macrocell and the group result to community Pico3 shown in Fig. 3 have nothing to do.
In another embodiment of the invention, can also measure respectively dynamic descending sub frame and static descending sub frame in advance, afterwards, according to the degree of approximation between the result that measurement obtains, dynamic descending sub frame and static descending sub frame are divided into groups, by sub-frame division to group close for measurement result (such as, can be CQI grade).Within a reprovision cycle, the one or more frames started can be selected to measure, for sub-frame division to group that measurement result is close.Afterwards, in the residue frame in this reprovision cycle, can measure respectively the subframe in each group according to this group result and report.Wherein, if select (such as, to select M at multiple frame 1individual frame, M 1be more than or equal to 2 and be less than the quantity of all frames in the reprovision cycle, such as, M 1can be 2 or 3, also can be other numerical value) in measure, then to each subframe measured, capital obtains multiple result, when the determination result degree of approximation, can be averaged (comprising weighted average) to multiple results of this subframe, obtain the measurement result of this subframe.In one embodiment, to M 1when subframe grouping in other frames after individual frame is measured, if at the frame of predetermined quantity, (this quantity can preset, can be set to one or more) in, there is the measurement result of multiple grouping closely even identical, then can to come to the same thing to these or close grouping merges, afterwards, then can carry out measuring and reporting according to the grouping after merging.
Further, within a reprovision cycle, the above-mentioned M of multiple exercise can be passed through 1measurement in individual frame, thus subframe is divided into groups, that is, in the reprovision cycle, repeatedly can again divide into groups (division waits channel quality sub-frame set) to subframe.Particularly, the M that can start most in the reprovision cycle 1individual frame is measured, and subframe is divided into groups, and obtains waiting channel quality sub-frame set, at M 1m after individual frame 2individual frame, according to group result, can measure each grouping and reports respectively; And at M 2after individual frame, can at follow-up M 3according to above-mentioned method of measurement, descending sub frame is divided into groups again in individual frame, obtain the sub-frame set such as channel quality such as grade repartitioned; M 3m after individual frame 4in individual frame, according to the sub-frame set such as channel quality such as grade of up-to-date division, each set can be measured respectively and reports.In one embodiment, M 1, M 2, M 3, M 4can be equal to each other.In another embodiment, M 1=M 3, M 2=M 4, M 1be not equal to M 2.In other embodiments, M 1, M 2, M 3, M 4value can arrange according to actual needs.In addition, within a reprovision cycle, the grouping again channel quality sub-frame set such as () repartitioning of more than twice can also be carried out.
Subframe is being divided in the embodiment obtaining waiting channel quality sub-frame set, measurement module 21 can be further used in multiple frames of predetermined quantity, in advance each dynamic descending sub frame in each frame is measured, and the static descending sub frame of at least one in each frame is measured.And, communication quality determining device according to the embodiment of the present invention can comprise further: computing module, for being averaged to multiple measurement results of each measured subframe in multiple frame, obtain each measurement result of measured dynamic descending sub frame and the measurement result of static descending sub frame.In the present embodiment, communication quality determining device can comprise grouping module equally, different from the embodiment described before, is used for sub-frame division to the grouping of measurement result difference in preset range according to the grouping module of the present embodiment.
In the present embodiment, due to the subframe divided in the grouping that obtains have close to or identical channel quality, therefore, the channel quality sub-frame set such as also the subframe grouping in the present embodiment can be called.
In addition, the grouping of Target cell descending sub frame can also be determined by other means, such as, also can be determined by base station side, and then inform end side.
Anyway descending sub frame is divided into groups, when measuring for the descending sub frame after grouping, to each grouping, measurement module 21 can measure the down channel quality of at least one descending sub frame in this grouping, to obtain the down channel quality measurement result of this grouping.And, communication module 22 is for reporting the down channel quality measurement result of grouping at least partly, wherein, the measurement result that the down channel quality measurement result of each grouping is average according to measured subframes all in the measurement result of at least one measured subframe in this grouping or this grouping obtains.Due to the configuring condition in advance based on dynamic descending sub frame and static descending sub frame, or in multiple frame, the measurement result of communication quality is divided into groups to descending sub frame before, so the communication quality of all subframes in grouping can be thought similar, therefore, can using the measurement result of the measurement result of one or more subframe in a grouping as this grouping, and measure respectively based on the grouping of descending sub frame, obviously can consider that the interference of different subframe exists the problem of larger difference under dynamic descending sub frame configuring condition, be better than in conventional art, descending sub frame not distinguished for a frame and reporting the scheme of a CQI.
In addition, carry out measurement result is given the correct time in communication module 22, the down channel quality measurement result of all groupings can be reported, also can report the down channel quality measurement result that part is divided into groups.Give the correct time on the down channel quality measurement result of part grouping is carried out, can according to the part one of at least determining to need to carry out the reporting grouping in following condition: down channel quality, the descending sub frame number comprised, report history.In one embodiment, in circumstances where communication resources are limited, the down channel quality measurement result of all groupings cannot be reported to base station, now can select the higher grouping of down channel quality and/or comprise the more grouping of descending sub frame number to carry out reporting of measurement result.Such as, down channel quality grade can be defined as the grouping needing to carry out reporting higher than the grouping of the down channel quality average rank of all groupings, also down channel quality grade can be defined as the grouping needing to carry out reporting higher than the grouping of a predetermined level; Similarly, when determining according to descending sub frame number the grouping needing to report, the sub-frame number comprised can be defined as the grouping needing to report equally more than the grouping of the average sub-frame number of all groupings, also the sub-frame number comprised can be defined as the grouping needing to report more than the grouping of present count value.In addition, can also by the quantity comprising dynamic descending sub frame higher than par or be defined as the grouping that needs to report higher than the grouping of predetermined value.In addition, can also adopt to multiple grouping the mode reported in turn, like this, give the correct time on each is taken turns, according to the sequence of multiple grouping, can report the down channel quality measurement result of one or more grouping.In addition, random reported mode can also be adopted, now, give the correct time on each, can the down channel quality measurement result of the one or more grouping of Stochastic choice report.Alternatively, no matter adopt the down channel quality measurement result what mode reports part to divide into groups, give the correct time on each, that can consider each grouping reports history, if the down channel quality measurement result of a grouping is not all reporting more than in n report cycle, then give the correct time on this, this grouping should be defined as the grouping needing to carry out reporting.Such as, when carrying out random reported, give the correct time at every turn on carrying out, except the grouping that reports can be needed by Stochastic choice, further the grouping that (or in the reporting of pre-determined number) does not carry out reporting all the time within a predetermined period of time can also be defined as the grouping needing to carry out reporting.And, above-mentionedly determine that the Rule of judgment of the grouping needing to report can combinationally use, such as, can by descending sub frame quantity more than par and down channel quality grade is defined as the grouping that needs to carry out reporting higher than the grouping of predetermined level, for other situations, will not enumerate herein.The measurement result of dividing into groups by reporting part, effectively can save Internet resources.
In addition, when report measurement results, the subframe that this measurement result should be reported further corresponding or the grouping of correspondence.Such as, if have selected two subframes to a grouping measure respectively and report the measurement result of these two subframes, then give the correct time on carrying out, except should reporting the measurement result of these two subframes, also should report the mark of corresponding subframe mark and/or this grouping; If carry out measuring for point of group selection subframe and the measurement result of measurement result as this grouping reported, then give the correct time on carrying out, except should reporting the measurement result of this subframe, also should report the subframe mark of this subframe and/or the mark of this subframe place grouping.
Wherein, if (namely network side knows the situation of dividing into groups to subframe, network side knows the mark of the subframe that the mark of each grouping and each grouping comprise), then give the correct time upper, can only report subframe to identify and (also can both all report) in group character; If network side does not know situation that antithetical phrase frame carries out dividing into groups (such as, carried out the process of packet combining, subframe situation of dividing into groups is caused to occur change), then before carrying out report measurement results or while report measurement results, the subframe grouping situation (comprising the mark of the subframe that the mark of grouping and each grouping comprise) after changing should be reported network side.
By describing above and can finding out, the present invention proposes in the system configured at dynamic TDD UL/DL the scheme measuring and report CQI.
Be wait sub-frame division in the embodiment of channel quality sub-frame set, mainly comprising the following steps:
Step 1, determine the static descending sub frame of Target cell and dynamic descending sub frame, specifically comprise step 1-1 and step 1-2:
Step 1-1, by X2 mouth, other neighbor cells inform that its configuration of target BS or target BS directly determine dynamic descending sub frame according to the feature of 7 kinds of configurations;
Step 1-2, Target cell marks off static descending sub frame and dynamic descending sub frame, and notify this division result of user (high-level signaling can be passed through in base station, such as RRC signaling, notify user dynamically/static descending sub frame);
Step 2, M before the reprovision cycle starts 1frame (in order to wait division of channel quality sub-frame set accurate afterwards, M 1should 2 be more than or equal to, with calculating mean value, reduce error; Measure for saving CQI and report resource, M 1should much smaller than the frame number in the reprovision cycle, for example, M 12-3 frame can be set to) each frame in, Target cell user measures down channel situation, obtains and somely waits channel quality sub-frame set, and undertaken occurring in this M by certain rule according to measurement result 1cQI in frame reports operation;
Step 3, M subsequently within this reprovision cycle 2in individual frame, user divides according to the channel quality sub-frame set that waits obtained, and measures and reports CQI value.In a reprovision cycle, step 2 and step 3 can repeatedly, with the change of adaptive system disturbed condition.
Being described in detail as follows of above-mentioned steps 1 to step 3:
Step S1, when each reprovision cycle starts, target cell base station mark off this Target cell TDDUL/DL configure in static descending sub frame in descending sub frame and dynamic descending sub frame, and this division result is notified this community user.Wherein, static descending sub frame is the subframe all remaining down direction in this target cell base station and neighbor cell base station TDD UL/DL configure; Dynamic descending sub frame is for down direction in this target cell base station TDD UL/DL configures, and is the subframe of up direction in some neighbor cell base station.Dividing static descending sub frame and dynamic descending sub frame can in the following ways:
Step S1-1, according to the feature of kind of the UL/DL configuration of 7 in TDD-LTE, descending sub frame 0,/1/,5/6 1 is decided to be static descending sub frame.Therefore subframe 0/1/5/6 can be divided into static descending sub frame, other descending sub frames are divided into dynamic descending sub frame.This dividing mode does not need each minizone mutual UL/DL configuration information (according to this method, base station does not need with UE alternately about the information of static descending sub frame and dynamic descending sub frame yet, and UE presets according to this and learns).In this manner, can ensure the static descending sub frame preset necessarily be included in actual working state under static descending sub frame in.Relative to determining the static state of Target cell/dynamically descending sub frame according to concrete adjacent cell uplink-downlink configuration, step S1-1 to save between target BS and adjacent cell base station and and terminal between the communication resource.
Step S1-2, the TDD UL/DL that target BS obtains its neighbor cell base station configures.According to the UL/DL configuration information of this community and adjacent cell, determine this Target cell TDD UL/DL configure in static descending sub frame in descending sub frame and dynamic descending sub frame.Suppose, in a frame within the current reprovision cycle, Target cell has N 1individual static descending sub frame and N 2individual dynamic descending sub frame.
Step S2, the M started most in a reprovision cycle 1(M in frame 1frame is much smaller than reprovision cycle duration) each frame in, Target cell user measures down channel situation, obtains and somely waits channel quality sub-frame set, and undertaken occurring in front M by certain rule according to measurement result 1cQI in frame reports operation, and step S2 specifically comprises the following steps S2-1 to step S2-3:
Step S2-1, in every frame, user is at N 1individual static descending sub frame random selecting subframe (also can select multiple static descending sub frame) is measured, and obtains a CQI quantized value CQI s_i, to N 2individual dynamic descending sub frame is measured respectively, each acquisition CQI quantized value CQI f1_i, CQI f2_i..., , (i ∈ 1 ..., M 1).
Step S2-2, if at this M 1in frame, user needs to report CQI information (here, " needs report " refers to the cycle that user configures according to base station high-level signaling and sub-frame offset value, determine the time point of oneself periodic report CQI, whenever this time point of arrival, will CQI information be reported), can in the following ways in one of at least report:
(mode one) is to N 1individual static descending sub frame reports a CQI value, and this CQI value can be to N 1this CQI measured value of individual static descending sub frame and the weighing computation results of CQI measured value several times before several.To N 2individual dynamic descending sub frame reports a CQI value separately, and this CQI value can be to this CQI measured value of this dynamic descending sub frame and the weighing computation results measuring CQI value before several several times.Wherein, the design principle of weight is as follows: can be simple calculating mean value; Also can be weighted on average to repetitive measurement result, wherein, give larger weight to the CQI measured value the closer to current time; Also only can consider this CQI measured, give weight factor 1 now can to this CQI measured value, the weight factor of the front measured value of CQI is several times 0.Here use the reason of weighted value to be: due to the uncertainty of channel and interference, during single measurement CQI, the momentary CQI value measured may not reflect the long-run average of channel quality, and if use weighted value, can better average channel quality be reflected.When reporting CQI information, user needs the corresponding relation notifying this cell base station CQI value and each subframe.Report the form instantiation of CQI as follows: as shown in Figure 3, hypothetical target community is community macrocell, the descending sub frame configuration of the current employing in this community is config#4, the configuration of its neighbor cell base station is respectively Config#1/#5/#5/#5/#1, now, static descending sub frame under the current configuration in this community is subframe 0/1/4/5/6/9, and dynamic descending sub frame is subframe 7/8.
If at this M 1in frame, user needs to report CQI information, report the form of CQI can adopt below shown in the form of CQI value+corresponding subframe mark:
CQI1(subframe 0/1/4/5/6/9);
CQI2(subframe 7/8).
Wherein, CQI value reflection be the Signal Interference and Noise Ratio of channel, namely wherein S is received signal power, and I is interference power, and N is noise power.Calculate M 1during average cqi value in frame, following three kinds of computational methods can be adopted:
(1) CQI aver = 1 M 1 Σ i = 1 M 1 S i I i + N ;
(2) CQI aver = 1 / M 1 Σ i = 1 M 1 S i 1 / M 1 Σ i = 1 M 1 I i + N ;
(3) CQI aver = 1 M 1 Σ i = 1 M 1 S i 1 / M 1 Σ i = 1 M 1 I i + N .
Wherein, i represents the measured subframe of i-th frame in multiple frame, M 1for the sum of multiple frame, CQI averrepresent the mean value of multiple measurement results of measured subframe, S irepresent the received signal power of the measured subframe of i-th frame in multiple frame, I irepresent the interference power of the measured subframe of i-th frame in multiple frame, N represents noise power, wherein S i/ I iin the i-th frame, measure the signal strength signal intensity/interference strength obtained.
(mode two) is to N 1individual static descending sub frame reports a weighting CQI value, and this CQI value can be to N 1this CQI measured value of individual static descending sub frame and measure the weighing computation results of CQI value before several several times.To N 2individual dynamic descending sub frame reports a weighting CQI value, and this CQI value can be to this CQI measured values of all dynamic descending sub frames and the weighing computation results measuring CQI value before several several times.When reporting CQI information, user needs the corresponding relation notifying this cell base station CQI value and each subframe.The mode reported equally can with reference to the form of the CQI value described in above-mentioned (mode one)+corresponding subframe mark (in the middle of subsequent treatment, owing to determining to wait channel quality sub-frame set by dividing, and partly or entirely dynamic descending sub frame may be gathered by certain putting under wherein, so, to N 2the process that reports of individual dynamic descending sub frame there will be change, reports in units of gathering from reporting separately to become).
(mode three) is on the basis of above-mentioned (mode two), subframe identical or close for the weighting CQI quantized value obtained is put under one and wait channel quality sub-frame set (dividing the action of gathering to be performed by UE) temporarily, report a CQI value to all subframes in each interim sub-frame set such as channel quality such as grade, this CQI value can be wait this CQI measured value of all subframes in channel quality sub-frame set to interim and measure the weighing computation results of CQI value before several several times.When reporting CQI information, user needs the corresponding relation notifying this cell base station CQI value and each subframe.
Step S2-3, user is to front M 1the CQI value that frame records is averaged, and obtains all N 1the average cqi value of individual static descending sub frame and each dynamic descending sub frame.UE can put same grade in channel quality sub-frame set under by having the subframe of identical or close average (such as, CQI has 5 grades, i.e. grade 1-5, and difference is no more than 1-2 grade) CQI quantized value.
CQI s=average (CQI s_i, i ∈ 1 ..., M 1), formula (1)
CQI Fj=average(CQI Fj_i,i∈{1,...,M 1}),j∈{1,...,N 2}.
Before by sub-frame division being sub-frame set such as channel quality such as grade, M can be determined according to formula (1) 1in individual frame static descending sub frame average after measurement result CQI s, in addition, M can be determined according to formula (1) 1the measurement result CQI of each dynamic descending sub frame after average in individual frame fj, wherein, j represents at M 1a jth dynamic descending sub frame of i-th frame in individual frame.
Step S3, at M subsequently 2individual frame (alternatively, M 1, M 2the value frame number that should meet in the reprovision cycle should be able to by M 1+ M 2divide exactly) in, user divides according to the channel quality sub-frame set that waits obtained, and measure and report CQI value, step S3 specifically comprises the following steps S3-1 to step S3-4:
Step S3-1, user is when measuring down channel quality, to belonging to the same all subframes waiting channel quality sub-frame set, random selecting subframe (also can select multiple subframe) carries out CQI measurement, and this measured value is measured the CQI value of moderate channel quality sub-frame set as this time.
Step S3-2, user, when reporting CQI information to base station, only needs to report a CQI value (if having selected these channel quality sub-frame set) to each channel quality sub-frame set that waits.
Step S3-3, waits channel quality sub-frame set, the CQI value of reporting of user for each, can be this CQI measured value of these channel quality sub-frame set and measures the weighing computation results of CQI value before several several times.
Step S3-4, user is at this M 2when reporting CQI information in individual frame at least first, need the corresponding relation notifying this cell base station CQI value and each subframe (can give the correct time at every turn and all notify the corresponding relation of CQI and each subframe, alternatively, notice of can only giving the correct time is first considered from the angle economized on resources, if the situation of follow-up appearance mergings grade channel quality sub-frame set, after merging first on give the correct time notify the corresponding relation of this cell base station CQI and each subframe).
Step S2 and step S3 can repeated several times in a reprovision cycle, so that when within the reprovision cycle, larger change appears in system interference, accommodation is made in the division of user side peer channel quality sub-frame set.Wherein, the frame number/(M of number of times=in the reprovision cycle of repetition 1+ M 2).If think, interference environment is comparatively stable in network, then can not repeat or to repeat less.If think, interference environment changes greatly in network, then can repeatedly repeat.For the 320ms i.e. reprovision cycle of 32 frames, the number of times of repetition can be 0-7 time.
In addition, in an embodiment, in above-mentioned steps S2-2 and step S3, when reporting of user CQI information, the priority that each CQI value reports can be considered:
According to the description in TS36.212 form 5.2.3.3-1, maximum carry coding before the bit number of channel information (comprising CQI/PMI/RI) be 13bit, but actual difference reports the bit maximum number for reporting channel information under pattern to be 11bit.The resource taken due to the CQI information be carried in ascending control channel is limited, thus user for the different channel quality sub-frame set that waits reports the situation that may occur reporting inadequate resource during CQI information respectively, therefore need the issue of priority considering each CQI value.
Step S4, when user is when reporting CQI information, runs into the situation of inadequate resource, following difference can be had to consider for the different channel quality sub-frame set CQI priority that waits:
(1) when inadequate resource, what CQI higher grade waits channel quality sub-frame set CQI to have the higher grade that reports, and the CQI value that CQI grade is low can be dropped.
(2) when inadequate resource, the channel quality sub-frame set CQI that waits containing more descending sub frame has the higher grade that reports, and what descending sub frame number was less waits channel quality sub-frame set CQI to be dropped.
(3) when inadequate resource, can adopt the mode of poll, each sub-frame set such as channel quality such as grade reports CQI information in turn.
Below by for the scene shown in Fig. 3, describe the scheme of the channel quality sub-frame set such as descending sub frame is divided into.
As shown in Figure 3, Target cell is Macro community, suppose that in this dynamic TDD system, (the reprovision cycle is here the reprovision cycle arranged in dynamic TDD network, when macro community keeps same uplink-downlink configuration always, because the small cell of surrounding can dynamic uplink-downlink configuration, each descending sub frame of macro community still has different interference levels.The division of dynamically/static descending sub frame is also effective to macro community) the UL/DL cycle of reshuffling is 320ms, i.e. 32 frame durations.In this example, CQI measures and reports scheme specific as follows:
Step S11, when each reprovision cycle starts, Macro cell base station mark off this community TDDUL/DL configure in static descending sub frame in descending sub frame and dynamic descending sub frame, and this division result is notified this community user.Specific as follows: the configuration that Macro cell base station obtains its neighbor cell base station is respectively Config#1/#5/#5/#5/#1, and according to self configuration Config#4.The static descending sub frame marked off under the current configuration in this community is subframe 0/1/4/5/6/9, and dynamic descending sub frame is subframe 7/8.This time comprise 6 static descending sub frames, 2 dynamic descending sub frames in division result.For different communities, dynamically/static descending sub frame is different.So-called dynamically/static descending sub frame in fact refer to this subframe of this community interference level dynamically or static but not this subframe whether change.
Step S12, before the reprovision cycle starts 2 frames each frame in, Target cell user measures down channel situation.Specific as follows: step S12-1, in the 1st frame, user measures 6 static descending sub frame random selecting subframes 6, obtains a CQI quantized value CQI s_1, 2 dynamic descending sub frames are measured respectively, each acquisition CQI quantized value CQI f1_1, CQI f2_1.In the 2nd frame, user measures 6 static descending sub frame random selecting subframes 1, obtains a CQI quantized value CQI s_2, 2 dynamic descending sub frames are measured respectively, each acquisition CQI quantized value CQI f1_2, CQI f2_2;
Step S12-2, in the 2nd frame, base station scheduling reporting of user CQI information.User will measure 6 the static descending sub frame CQI obtained recently s_2, and measure 2 the dynamic descending sub frame CQI obtained recently f1_2, CQI f2_2report (in the reporting schemes that step S12-2 describes, only report the CQI value that the last measurement obtains, namely the CQI value obtained is measured in the second frame, in fact, can be understood as the CQI value weighted factor measured the second frame is 1, the CQI value weighted factor obtained the first frame measurement is 0, and therefore, the actual result reported is identical with the measurement result in the 2nd frame).
Step S12-3, by the measurement of front 2 frames, user calculates CQI by formula (1) s, CQI f1, CQI f2.If find CQI f1=CQI f2≠ CQI s, then can by the channel quality sub-frame set 1 such as descending sub frame 0/1/4/5/6/9 puts under, by the channel quality sub-frame set 2 such as subframe 7/8 puts under.
Step S13, in 14 frames subsequently, user divides according to the channel quality sub-frame set that waits obtained, measure and report CQI value, specific as follows: step S13-1, to the channel quality sub-frame set 1(2 such as belonging to) in all subframes, user, when down channel situation measured by needs, chooses a subframe and carries out CQI measurement.And this measured value is measured the CQI value of moderate channel quality sub-frame set as this time.The CQI be selected measures during the several times of subframe in 14 frames are measured and can be the same or different.Step S13-2, user, when needs report CQI information to base station, only needs peer channel quality sub-frame set 1/2 respectively to report a CQI value.Step S13-3, in these 14 frames, user at least when reporting CQI information first, notifies the corresponding relation of this cell base station CQI value and each subframe.
Step S12 and step S13 can operate 2 times in a reprovision cycle.
Except by except the embodiment of the channel quality sub-frame set such as descending sub frame is divided into, directly descending sub frame is divided the scheme of the grouping of dynamic descending sub frame and the grouping of dynamic descending sub frame according to ascending-descending subframes configuration, specifically can comprise the following steps:
First, terminal knows static descending sub frame and dynamic descending sub frame, and all static sub-frame of uplink are set to the first sub-frame set (grouping), and all dynamic descending sub frames are set to the second sub-frame set (grouping);
Afterwards, when needs report CQI, CQI measurement is carried out from the first frame set random selecting subframe, and using the CQI value of this measured value as this first sub-frame set, CQI measurement is carried out in addition from the second sub-frame set random selecting subframe, and using the CQI value of this measured value as this second sub-frame set;
Next, the CQI value of two sub-frame set and the aggregate information of correspondence thereof are all reported base station, because base station has natively known the member of each sub-frame set, therefore only need the ID of report set as aggregate information, such as can represent these two set with 1 bit information, 0 represents the first sub-frame set, and 1 represents the second sub-frame set.
Further, after obtaining above-mentioned first sub-frame set and the second sub-frame set, Further Division can be carried out to the second sub-frame set.Now, measure and report the process of CQI as follows:
(1) channel quality set such as initial of base station end Network Based divides, and by this division result notice user side.
The interfered cell number of the neighbor cell uplink interference that target cell base station is subject to according to the descending sub frame in this community uplink-downlink configuration divides and initially waits channel quality sub-frame set.Put this cell downlink subframe of the uplink interference community having equal number under same set, put this cell downlink subframe of the uplink interference community having varying number under different sets.
(2) user side divides based on the channel quality set such as initial and measures CQI.
(2-1) user is when measuring down channel quality, and to belonging to the same initial all subframes waiting channel quality sub-frame set, random selecting subframe carries out CQI measurement, and this measured value is measured the CQI value of moderate channel quality sub-frame set as this time.
(2-2) initially waiting channel quality sub-frame set, the CQI value of user side for reporting for each, can be this CQI measured value of these channel quality sub-frame set and before several, measure the weighing computation results of CQI value several times.
(3) adjust the channel quality set such as initial and report CQI.
According to each initial CQI value waiting channel quality sub-frame set reporting of user obtained in step (2-2), adjustment is initial to be waited channel quality sub-frame set and reports CQI can adopt following two kinds of modes:
(3-1) user side initially waits channel quality sub-frame set to report a CQI value to each, the CQI value of channel quality sub-frame set is initially waited according to each receiving in base station, identical or close for the CQI value channel quality sub-frame set such as initial is merged, after being adjusted, waits channel quality sub-frame set.The channel quality sub-frame set division result that waits after adjustment is notified user side by base station.
(3-2) user side compare each initially wait channel quality sub-frame set for CQI value, the initial channel quality sub-frame set that waits identical or close for CQI value is merged, the sub-frame set such as channel quality such as grade after being adjusted.User reports a CQI value to the channel quality sub-frame set that waits after each adjustment, and the corresponding relation of informing base station CQI value and sub-frame set.
(4) user side based on adjustment after etc. channel quality set repeat step 2/3.
According to embodiments of the invention, additionally provide the communication quality defining method in a kind of wireless communication system.
As shown in Figure 4, comprise according to the communication quality defining method in the wireless communication system of the embodiment of the present invention:
Step S401, according to static descending sub frame and the dynamic descending sub frame distribution situation of Target cell, carry out down channel quality measurement, wherein, static descending sub frame is subframe Target cell and adjacent cell being to down direction, dynamic descending sub frame is the subframe of down direction for Target cell, and be the subframe of up direction at least one adjacent cell;
Step S402, reports down channel quality measurement result.
On the one hand, the method may further include: the static descending sub frame of receiving target community and dynamic descending sub frame information.And, the method may further include: according to static descending sub frame and the dynamic descending sub frame information of Target cell and the uplink/downlink sub-frame configuration of adjacent cell or the Target cell of reception, the descending sub frame of Target cell is divided into groups, obtains comprising the grouping of static descending sub frame and comprising the grouping of dynamic descending sub frame.Further, the method can also comprise: according to the quantity of the interfering subframe of each dynamic descending sub frame, divide into groups further to the grouping of dynamic descending sub frame, and wherein, interfering subframe is the uplink interference subframe of other communities.
On the other hand, the method can comprise further: in multiple frames of predetermined quantity, measures in advance to each dynamic descending sub frame in each frame, and measures the static descending sub frame of at least one in each frame; The multiple measurement results of each measured subframe in multiple frame are averaged, obtain each measurement result of measured dynamic descending sub frame and the measurement result of static descending sub frame; By sub-frame division to the grouping of measurement result difference in preset range.
Wherein, according to the static descending sub frame of Target cell and dynamic descending sub frame distribution situation, carry out down channel quality when measuring, for each grouping, measure the down channel quality of at least one descending sub frame in this grouping, to obtain the down channel quality measurement result of this grouping.
Further, the method can comprise further: merge multiple groupings of difference in preset range of measuring the result obtained thus obtain one or more grouping.
In addition, during the result measured reporting down channel quality, can report the down channel quality measurement result of grouping at least partly, wherein, the measured value that the down channel quality measurement result of each grouping is average according to measured subframes some in the measured value of at least one measured subframe in this grouping or this grouping obtains.
Alternatively, when reporting down channel quality measurement result, the down channel quality measurement result of part grouping in all groupings is reported, wherein, according to the part one of at least determining to need to carry out the reporting grouping in following condition: down channel quality, the descending sub frame number comprised, report history.
In addition, when report measurement results, the subframe that this measurement result can be reported further corresponding or the grouping of correspondence.
According to embodiments of the invention, additionally provide the communication quality acquisition device in a kind of wireless communication system.
As shown in Figure 5, comprise according to the communication quality acquisition device in the wireless communication system of the embodiment of the present invention:
Judge module 51, for judging static descending sub frame in the descending sub frame of Target cell and dynamic descending sub frame distribution situation according to the uplink/downlink sub-frame configuration of Target cell and adjacent cell;
Communication module 52, for static descending sub frame and dynamic descending sub frame distribution situation being sent to the subscriber equipment of Target cell, and reception subscriber equipment carries out measuring and the down channel quality measurement result reported according to static descending sub frame and dynamic descending sub frame distribution situation.
Wherein, communication module 52 is also for receiving the uplink/downlink subframe configuration information of adjacent cell.
And, communication module 52 also for carry out in Target cell or adjacent cell uplink/downlink subframe reshuffle time, send or receive the uplink/downlink subframe configuration information after reshuffling, further, judge module 51 is also for rejudging static descending sub frame in the descending sub frame of Target cell and dynamic descending sub frame distribution situation according to the uplink/downlink subframe configuration information after reshuffling.
In addition, this device can further include:
Parsing module (not shown), for resolving the down channel quality measurement result of reception, to determine the subframe that this measurement result is corresponding.
According to embodiments of the invention, additionally provide the communication quality acquisition methods in a kind of wireless communication system.
As shown in Figure 6, comprise according to the communication quality acquisition methods in the wireless communication system of the embodiment of the present invention:
Step S601, judges static descending sub frame in the descending sub frame of Target cell and dynamic descending sub frame distribution situation according to the uplink/downlink sub-frame configuration of Target cell and adjacent cell;
Step S603, static descending sub frame and dynamic descending sub frame distribution situation are sent to the subscriber equipment of Target cell, and reception subscriber equipment carries out measuring and the down channel quality measurement result reported according to static descending sub frame and dynamic descending sub frame distribution situation.
In sum, by means of technique scheme of the present invention, by according to the static descending sub frame of Target cell and dynamic descending sub frame distribution situation, actual disposition situation for descending sub frame carries out measuring and reporting, can when dynamic TDD UL/DL configures Measurement accuracy channel quality report to network side, the problem of the practical communication quality of each descending sub frame of effectively avoiding CQI in prior art to report when network side can not be made to know that dynamic TDD UL/DL configures.In addition, by merging grouping, and/or to the grouping determined to need to carry out measurement result and report, can effectively save the expense reported.
Below general principle of the present invention is described in conjunction with specific embodiments, but, it is to be noted, for those of ordinary skill in the art, whole or any step or the parts of method and apparatus of the present invention can be understood, can in the network of any calculation element (comprising processor, storage medium etc.) or calculation element, realized with hardware, firmware, software or their combination, this is that those of ordinary skill in the art use their basic programming skill just can realize when having read explanation of the present invention.
Therefore, object of the present invention can also be realized by an operation program or batch processing on any calculation element.Described calculation element can be known fexible unit.Therefore, object of the present invention also can realize only by the program product of providing package containing the program code realizing described method or device.That is, such program product also forms the present invention, and the storage medium storing such program product also forms the present invention.Obviously, described storage medium can be any storage medium developed in any known storage medium or future.
According to another embodiment of the present invention, (this storage medium can be ROM to additionally provide a kind of storage medium, RAM, hard disk, detachable memory etc.), the computer program for carrying out down channel quality measurement is embedded with in this storage medium, this computer program has the code segment being arranged to and performing following steps: according to static descending sub frame and the dynamic descending sub frame distribution situation of Target cell, carry out down channel quality measurement, wherein, static descending sub frame is subframe Target cell and adjacent cell being to down direction, dynamic descending sub frame is the subframe of down direction for Target cell, and be the subframe of up direction at least one adjacent cell, report down channel quality measurement result.
According to another embodiment of the present invention, additionally provide a kind of computer program, this computer program has the code segment being arranged to and performing following steps: according to static descending sub frame and the dynamic descending sub frame distribution situation of Target cell, carry out down channel quality measurement, wherein, static descending sub frame is subframe Target cell and adjacent cell being to down direction, dynamic descending sub frame is the subframe of down direction for Target cell, and be the subframe of up direction at least one adjacent cell; Report down channel quality measurement result.
According to another embodiment of the present invention, additionally provide a kind of device, this device comprises processor, this processor is arranged to execution following steps: according to static descending sub frame and the dynamic descending sub frame distribution situation of Target cell, carry out down channel quality measurement, wherein, static descending sub frame is subframe Target cell and adjacent cell being to down direction, dynamic descending sub frame is the subframe of down direction for Target cell, and be the subframe of up direction at least one adjacent cell; Report down channel quality measurement result.
When realizing embodiments of the invention by software and/or firmware, from storage medium or network to the computer with specialized hardware structure, the program forming this software installed by all-purpose computer 700 such as shown in Fig. 7, this computer, when being provided with various program, can perform various function etc.
In the figure 7, central processing module (CPU) 701 performs various process according to the program stored in read-only memory (ROM) 702 or from the program that storage area 708 is loaded into random-access memory (ram) 703.In RAM703, also store the data required when CPU701 performs various process etc. as required.CPU701, ROM702 and RAM703 are connected to each other via bus 704.Input/output interface 705 is also connected to bus 704.
Following parts are connected to input/output interface 705: importation 706, comprise keyboard, mouse etc.; Output 707, comprises display, such as cathode ray tube (CRT), liquid crystal display (LCD) etc., and loud speaker etc.; Storage area 708, comprises hard disk etc.; With communications portion 709, comprise network interface unit such as LAN card, modulator-demodulator etc.Communications portion 709 is via network such as internet executive communication process.
As required, driver 710 is also connected to input/output interface 705.Detachable media 711 such as disk, CD, magneto optical disk, semiconductor memory etc. are installed on driver 710 as required, and the computer program therefrom read is installed in storage area 708 as required.
When series of processes above-mentioned by software simulating, from network such as internet or storage medium, such as detachable media 711 installs the program forming software.
It will be understood by those of skill in the art that this storage medium is not limited to wherein having program stored therein shown in Fig. 7, distributes the detachable media 711 to provide program to user separately with device.The example of detachable media 711 comprises disk (comprising floppy disk (registered trade mark)), CD (comprising compact disc read-only memory (CD-ROM) and digital universal disc (DVD)), magneto optical disk (comprising mini-disk (MD) (registered trade mark)) and semiconductor memory.Or hard disk that storage medium can be ROM702, comprise in storage area 708 etc., wherein computer program stored, and user is distributed to together with comprising their device.
Also it is pointed out that in apparatus and method of the present invention, obviously, each parts or each step can decompose and/or reconfigure.These decompose and/or reconfigure and should be considered as equivalents of the present invention.Further, the step performing above-mentioned series of processes can order naturally following the instructions perform in chronological order, but does not need necessarily to perform according to time sequencing.Some step can walk abreast or perform independently of one another.
Although described the present invention and advantage thereof in detail, be to be understood that and can have carried out various change when not departing from the spirit and scope of the present invention limited by appended claim, substituting and conversion.And, the term of the application " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or device and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or device.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the device comprising described key element and also there is other identical element.

Claims (25)

1. the communication quality determining device in wireless communication system, is characterized in that, comprising:
Measurement module, for according to the static descending sub frame of Target cell and dynamic descending sub frame distribution situation, carry out down channel quality measurement, wherein, described static descending sub frame is the subframe described Target cell and adjacent cell being to down direction, described dynamic descending sub frame is the subframe of down direction for described Target cell, and be the subframe of up direction at least one adjacent cell;
Communication module, for reporting down channel quality measurement result.
2. communication quality determining device according to claim 1, is characterized in that, described communication module is also for receiving the static descending sub frame of described Target cell and dynamic descending sub frame information.
3. communication quality determining device according to claim 1, is characterized in that, comprise further:
Grouping module, for according to the static descending sub frame of the uplink/downlink sub-frame configuration of described Target cell and adjacent cell or the described Target cell of reception and dynamic descending sub frame information, the descending sub frame of described Target cell is divided into groups, obtains comprising the grouping of static descending sub frame and comprising the grouping of dynamic descending sub frame.
4. communication quality determining device according to claim 3, it is characterized in that, described grouping module is further used for the quantity of the interfering subframe according to each dynamic descending sub frame, the grouping of described dynamic descending sub frame is divided into groups further, wherein, described interfering subframe is the uplink interference subframe of other communities.
5. communication quality determining device according to claim 1, it is characterized in that, described measurement module is further used in multiple frames of predetermined quantity, in advance channel quality measurement is carried out to each dynamic descending sub frame in each frame, and channel quality measurement is carried out to the static descending sub frame of at least one in each frame;
Further, described communication quality determining device comprises further:
Computing module, for being averaged to multiple measurement results of each measured subframe in described multiple frame, obtains each measurement result of measured dynamic descending sub frame and the measurement result of static descending sub frame;
Grouping module, for dividing into groups the sub-frame division to of measurement result difference in preset range.
6. the communication quality determining device according to any one of claim 3-5, it is characterized in that, described measurement module is used for each grouping, measures the down channel quality of at least one descending sub frame in this grouping, to obtain the down channel quality measurement result of this grouping.
7. communication quality determining device according to claim 6, is characterized in that, the multiple groupings of difference in preset range that described grouping module is further used for measuring the result obtained merge thus obtain one or more grouping.
8. the communication quality determining device according to any one of claim 3-5, it is characterized in that, described communication module is used for reporting the down channel quality measurement result of grouping at least partly, wherein, the measured value that the down channel quality measurement result of each grouping is average according to measured subframes some in the measured value of at least one measured subframe in this grouping or this grouping obtains.
9. the communication quality determining device according to any one of claim 3-5, it is characterized in that, described communication module is used for reporting the down channel quality measurement result of grouping all or part of in all groupings, wherein, the described part grouping carrying out reporting is needed according to one of at least determining in following condition: down channel quality, the descending sub frame number comprised, report history.
10. the communication quality determining device according to any one of claim 3-5, is characterized in that, when report measurement results, and the subframe reporting this measurement result corresponding further or the grouping of correspondence.
Communication quality defining method in 11. 1 kinds of wireless communication systems, is characterized in that, comprising:
According to static descending sub frame and the dynamic descending sub frame distribution situation of Target cell, carry out down channel quality measurement, wherein, described static descending sub frame is the subframe described Target cell and adjacent cell being to down direction, described dynamic descending sub frame is the subframe of down direction for described Target cell, and be the subframe of up direction at least one adjacent cell;
Report down channel quality measurement result.
12. communication quality defining method according to claim 11, is characterized in that, comprise further:
Receive the static descending sub frame of described Target cell and dynamic descending sub frame information.
13. communication quality defining method according to claim 11, is characterized in that, comprise further:
According to static descending sub frame and the dynamic descending sub frame information of described Target cell and the uplink/downlink sub-frame configuration of adjacent cell or the described Target cell of reception, the descending sub frame of described Target cell is divided into groups, obtains comprising the grouping of static descending sub frame and comprising the grouping of dynamic descending sub frame.
14. communication quality defining method according to claim 13, is characterized in that, comprise further:
According to the quantity of the interfering subframe of each dynamic descending sub frame, divide into groups further to the grouping of described dynamic descending sub frame, wherein, described interfering subframe is the uplink interference subframe of other communities.
15. communication quality defining method according to claim 11, is characterized in that, comprise further:
In multiple frames of predetermined quantity, in advance each dynamic descending sub frame in each frame is measured, and the static descending sub frame of at least one in each frame is measured;
The multiple measurement results of each measured subframe in described multiple frame are averaged, obtain each measurement result of measured dynamic descending sub frame and the measurement result of static descending sub frame;
By sub-frame division to the grouping of measurement result difference in preset range.
16. communication quality defining method according to any one of claim 13-15, is characterized in that, according to static descending sub frame and the dynamic descending sub frame distribution situation of described Target cell, carry out down channel quality measurement and comprise:
For each grouping, measure the down channel quality of at least one descending sub frame in this grouping, to obtain the down channel quality measurement result of this grouping.
17. communication quality defining method according to claim 16, is characterized in that, comprise further:
The multiple groupings of difference in preset range of measuring the result obtained are merged thus obtain one or more grouping.
18. communication quality defining method according to any one of claim 13-15, it is characterized in that, the result reporting down channel quality to measure comprises:
The down channel quality measurement result of grouping is at least partly reported, wherein, the measured value that the down channel quality measurement result of each grouping is average according to measured subframes some in the measured value of at least one measured subframe in this grouping or this grouping obtains.
19. communication quality defining method according to any one of claim 13-15, it is characterized in that, when reporting down channel quality measurement result, the down channel quality measurement result of part grouping in all groupings is reported, wherein, the described part grouping carrying out reporting is needed according to one of at least determining in following condition: down channel quality, the descending sub frame number comprised, report history.
20. communication quality defining method according to any one of claim 13-15, is characterized in that, when report measurement results, and the subframe reporting this measurement result corresponding further or the grouping of correspondence.
Communication quality acquisition device in 21. 1 kinds of wireless communication systems, is characterized in that, comprising:
Judge module, for judging static descending sub frame in the descending sub frame of described Target cell and dynamic descending sub frame distribution situation according to the uplink/downlink sub-frame configuration of Target cell and adjacent cell;
Communication module, for described static descending sub frame and dynamic descending sub frame distribution situation being sent to the subscriber equipment of described Target cell, and receiving described subscriber equipment and carry out measuring and the down channel quality measurement result reported according to described static descending sub frame and dynamic descending sub frame distribution situation.
22. communication quality acquisition device according to claim 21, is characterized in that, described communication module is also for receiving the uplink/downlink subframe configuration information of adjacent cell.
23. communication quality acquisition device according to claim 21, it is characterized in that, described communication module also for carry out in described Target cell or described adjacent cell uplink/downlink subframe reshuffle time, send or receive the uplink/downlink subframe configuration information after reshuffling, described judge module also rejudges static descending sub frame in the descending sub frame of described Target cell and dynamic descending sub frame distribution situation for the uplink/downlink subframe configuration information after reshuffling described in basis.
24. communication quality acquisition device according to claim 21, is characterized in that, comprise further:
Parsing module, for resolving the down channel quality measurement result of reception, to determine the subframe that this measurement result is corresponding.
Communication quality acquisition methods in 25. 1 kinds of wireless communication systems, is characterized in that, comprising:
Static descending sub frame in the descending sub frame of described Target cell and dynamic descending sub frame distribution situation is judged according to the uplink/downlink sub-frame configuration of Target cell and adjacent cell;
Described static descending sub frame and dynamic descending sub frame distribution situation are sent to the subscriber equipment of described Target cell, and receive described subscriber equipment and carry out measuring and the down channel quality measurement result reported according to described static descending sub frame and dynamic descending sub frame distribution situation.
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